A religion or sect that is generally considered to be unorthodox, extremist, or false WordNet 3.0 & Open English WordNet

Cult is a term, in most contexts pejorative, for a relatively small group which is typically led by a charismatic and self-appointed leader, who excessively controls its members, requiring unwavering devotion to a set of beliefs and practices which are considered deviant. Wikipedia

Religious or social group with socially deviant or novel beliefs and practices. Wikipedia Disambiguation

Social group with socially deviant or novel religious, philosophical or spiritual beliefs and practices Wikidata